By BY MIKE BAKER AND LUCY TOMPKINS U.S. https://ift.tt/3sncGmx Cities across the country have tried to adopt their own regulations. Boulder’s ordinance was blocked in court shortly before a mass shooting left 10 people dead. New York Times Gun Control, Mass Shootings, Boulder, Colo, Shooting (March, 2021), Aurora, Colo, Shooting (2012), Firearms, School Shootings and Armed Attacks, Parkland, Fla, Shooting (2018) March 25, 2021 at 12:33AM